EXHIBIT 4.18
 Summary of Private Instrument for Regulation of Rights and Obligations between Farmer Partners  Parties:Brenco – Companhia Brasileira de Energia Renovável, as Farmer Partner 1, and Brasilagro – Companhia Brasileira de Propriedades Agrícolas, as Farmer Partner 2. Purpose:Considering that the Farmer Partner 1 executed rural partnership agreements, in order todevelop theplantation of sugarcane crop in the arable area of the properties listed in the attachment II; and considering that the Farmer Partner 2 intended to take part of  Farmer Partner 1 rights in the mentioned contracts, the agreement’s purpose is the assignment, by Farmer Partner 1 to Farmer Partner 2, of co-possession of the arable area of the properties Term:The agreement shall remain in force for the periods set forth in attachment II. Parties’s participation:Farmer Partner 1, Farmer Partner 2 and the owner partners shall receive the quantity of sugarcane established in the attachment IV. ____________________________________________________________________ BRENCO – COMPANHIA BRASILEIRA DE ENERGIA RENOVÁVEL /s/ Luiz Paulo Sant’Anna

   Agro-industrial Superintendent

   /s/    Celso Luiz Tavares Ferreira

   Vice Chief Operating Officer   _____________________________________________________________________ BRASILAGRO COMPANHIA BRASILEIRA DE PROPRIEDADES AGRÍCOLAS /s/ André Guillaumon

   Chief Operating Officer

   /s/ Gustavo Javier Lopez

   Chief Administrative OfficerWITNESSES:

   /s/Ana Luisa Gomes Kós Duboc de Almeida

   /s/Ana Carolina Carpegiani


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Attachment II – List of Real Properties Real Property, Localization, Register(s)

   Owner(s)

   Purpose

   (arable area)

   Beginning of Term

   Private Instrument for Regulation of Rights and Obligations between Farmer Partners

   Expiration of Term

   Private Instrument for Regulation of Rights and Obligations between Farmer PartnersEnfurnado Farm, Alto Araguaia/MT, M. 1.735 ofReal Estate Registry Office of Alto Araguaia/MT

   Silvio Ramos Rodrigues

   409,06 ha

   04/01/2015

   03/31/2019Terra Boa Farm, Alto Taquari/MT, M. 37 of Real Estate Registry Office of Alto Taquari/MT

   Sebastião de Sá

   454,34 ha

   04/01/2015

   03/31/2017Primavera Farm, Alto Taquari/MT, M. 1.295 of Real Estate Registry Office of Alto Taquari/MT

   Roberta Grellet da Costa

   96,55 ha

   04/01/2015

   03/31/2017Camilana Farm, Alto Taquari/MT, M. 878 of Real Estate Registry Office of Alto Taquari/MT

   Camila Cristina Wihelms Naumann

   162,6 ha

   04/01/2015

   03/31/2019Bavia Farm, Alto Taquari/MT, M. 1.224 of Real Estate Registry Office of Alto Taquari/MT

   Bruna e Paula Bavia

   319,43 ha

   04/01/2015

   03/31/2018Rancho Alegre Farm and Girassol Farm, Alto Taquari/MT, M. 1.225 and 1.227 of Real Estate Registry Office of Alto Taquari/MT

   Bruna Alves Bavia

   197,42 ha

   04/01/2015

   03/31/2018Santa Paula Farm and Bom Jesus Farm, Alto Taquari/MT, M. 1.226 and 494 of Real Estate Registry Office of Alto Taquari/MT

   Paula Alves Bavia

   263,49 ha

   04/01/2015

   03/31/2017Fabiano Farm, Alto Taquari/MT, M. 2.405, 474, 3.961 and 1.584 of Real Estate Registry Office of Alto Taquari/MT

   Vilson Schneider

   2.013,62 ha

   04/01/2015

   03/31/2019


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Attachment IV–Parties’s participation  Parties’s participationHarvest of 2015 Harvest of 2016 Harvest of 2017 Harvest of 2018Estimated production

   (t)

   262.615,99

   217.400,42

   112.464,56

   25.042,43Owner Partner’s participation (t)

   40.470,44

   44.200,86

   16.969,78

   3.864,60Farmer Partner 1’s participation

   1.000,00

   1.000,00

   1.000,00

   19.193,19Farmer Partner 1’s participation

   221.145,55

   172.199,56

   94.494,78

   1.984,64